Incandescent gas-burner.



Patented Dec; 24, mm.

d 6b 9 w 1' z In v w m fi w L mw w. H. A. 'SIEVERTSfi. J. r. c.JUEBGENS.

INCANDESCENT GAS BURNER.

(Applicatiozi filed Aug. 4, 19oo.

(No Model.)

UNITED STATES PATENT OFFICE.

WILI-IELM HEINRICH AUG. SIEVER'IS, OF HAMBURG-UHLENHORST, AND JULIUSFRIEDRICH CHARLES JUERGENS, OF ALTONA, GERMANY.

INCANDEISCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent N 0. 689,657,, datedDecember '24, 1901.

' Application filed August 4. 1900. semi No. 25,865. (No model.)

To all whom it may concern:

Be it known that we, WILHELM HEINRICH AUGUST 'SIEVERTS, residing atHamburg-Uhlenhorst, and JULIUS FRIEDRICH CHARLES JUERGENs, residing at35 Oelkers Allee, Altona, Germany, subjects of the Emperor of Germany,have invented a certain new and useful Improved Incandescent Gas-Burner,of which the following is a specification.

Our invention relates to improvements in incandescent gas burners ofthat type in which the burner is provided with a disk or flame-spreader;and the object of our invention is to render the said disk orflame-spreader adjustable upon the burner when lighted,as it has beenfound that such disks are eflicient only when arranged at aproperly-regulated distance from the top of the supply-nozzle inaccordance with the variations in the mixture of gas and air issuingthrough the nozzle. The various arrangements heretofore devised for thispurpose have been void of practical results for the reason that they donot admit of adjustment while the burner is lighted,and much less sowhen the incandescent mantle is placed on the burner. Moreover, it hasbeen noticed that in the position of the burner in which the flamedevelops its greatest heat there is astrong tendency totback-lightingunless this is prevented by a wire netting or sieve arranged in theimmediate proximity of the disk and in such a manner that the said sieveshall remain in the same relative position with the disk and withoutdisengaging from the burner-head. We attain these objects by theconstruction illustrated in the accompanying drawings, in which- Figure1 is a vertical section of the entire burner; Fig. 2, a horizontalsection taken on the line A B of Fig. 1; Fig. 3, a vertical section of aslightly-modifiedburner-tube, and Fig. at a horizontal section taken onthe line C D of Fig. 3.

Similar letters refer to similar parts throughout the several views Overthe ordinary mixing-tube a,having reduced top, Fig. 1, is placed asleeve 1), provided with a support 0 for carrying the threaded stem (1of the disk d and the wire sieve 6, connected therewith. The stem (1 isadjustable in the said support 0, and the disk is adjustable on thestem. The lower portion of this sleeve-like carrier b of the disk orflame spreader d is'surrounded by a second and shorter sleeve or ring f,provided with external screw-threads. The carrier-sleeve b isfurthersurrounded by a third sleeve or outer tube g, to the upper end ofwhich is secured the burner-head h, while to its lower end is securedthe gallery 1' for the chimney. The tube g is seated upon a nut is,screwed upon the ringf and furnished with a set-screw Z for fixing it inposition. The screw may obviously be replaced by other means which willallow of the vertical adjustment of the tube g, and this latter may, ifdesired, also be provided with screw-threads. The lower end of thissleeve is provided with the collar or projection b and adjacent flange band the sleeve or ringf with a correspondinglyshaped flange f fittingtherein, as seen in Fi 1.

%Vhen turning the nut is, the tube g, with the burner-head h, is movedin a vertical direction and can thereby be adjusted relatively to thenozzle of the mixing-tube Ct, and the correct position of theburner-head can be ascertained by'watching the light, which willindicatethe moment when flame develops its greatest heat. Thecarrier-sleeve b may, if desired, be prevented from revolving byproviding a projection m on the tube 9 and a corresponding notch n onthe sleeve b for their mutual engagement. 1

In the modified form shown at Figs. 3 and 4 the mixing-tube issurrounded by a carriertube 1), provided with a cup-shaped'enlargementat the top, to which is secured the burner-head h. In the interior ofthis tube there are provided two cross-pieces c, which receive thescrew-threaded stem 0 of the disk d and wire sieve e. In lieu of thecrosspieces and screw-stem an internal screwed path or the like may beadopted. The rotation of the disk d upon the upper end of its stem isprevented by a small screw d,'which is tightened against the stem. Foradjusting the disk upon the lighted burner the outer tube is held bymeans of suitable tongs while without the incandescent mantle being onthe lighted burner by the fact that the disk is then enveloped in agreenzone of the flame.

\Ve are aware that prior to our invention incandescent gas-burners havebeen provided with disks; but these could not be adjusted in accordancewith the variations in the gas and air mixture after the burner waslighted. WVe therefore do not claim such acombination broadly; but

What we do claim as our invention, and desire to secure by LettersPatent of the United States, is

1. In an incandescent gas-burner, the coin-v bination with themixing-tube and a flamespreader, of a sleeve for carrying theflamespreader, a sieve for the top of the burner,

.and an intervening stem having its ends secured in the flame-spreaderand in the said sleeve respectively, as set forth.

2. The combination in an incandescentgasburner with a mixing-tube havinga reduced top portion, of a sleeve fitting such reduced top portion andwidened at its upper end, a burner-sieve a flame-spreader having anadjustable stem, and a support for the stem of the flame-spreader andthe burner-sieve, as set forth.

3. In an incandescent gas-burner the combination with a mixing-tubehaving a reduced top portion, of a short outer ring, a sleeve widened atits upper end and formed at its lower end with a circular projection andwith an adjacent flange between which a correspondingly-shaped flange ofthe short outer ring is secured, substantially as set forth.

4. In an incandescent gas-burner, the combination with a burner-sieve, amixing-tube, a flame-spreader having a stem, and a sleeve carrying thestem of the flame-spreader and burner-sieve, of an outer ring secured tosaid sleeve and provided with external screwthreads and with a nutadapted to be adjusted upon the ring and to be fixed in positionthereupon by a set-screw and an outer tube, substantially as set forth.

5. In an incandescent gas-burner the combination with a burner-sieve, amixing-tube, a flame-spreaderhaving astem, a sleeve carrying the stem ofthe flame-spreader and burnersieve and a ring externally screw-threadedand an adjustable nut or collar, of a tube fitting loosely arouni thesaid ring and carried by the adjustable nut thereof, such tube carryingat its upper end an annular burnerhead, substantially as set forth.

6. In an incandescent gas-burner the combination with a burnersieve, amixing-tube, and a flame-spreader having a stem, of a closely-fittingsleeve having an enlarged top and carrying the stern of theflame-spreader and the burner-sieve, a ring secured to the lower end ofthe sleeve and fitted with an adjustable nut, an outer burner-tubefurnished with a burner-head and adapted to slide upon the said sieveand with an enlarged base and a gallery connected to such base,substantially as set forth.

7. In an incandescent gas-burner; the combination with a mixing-tube,and a flamespreader having a stem, and a burner-sieve, of a sleevehaving an enlarged upper portion, an external annular burner-head, itssupport, and a support for the reception and adjustment of the lower endof the stem carrying the disk and burnersieve which latter is therebycapable of being adjusted in the burner-head and as to its distance fromthe nozzle of the said mixing-tube, substantially as set forth.

In testimony whereof we have hereunto set our hands, in presence of twosubscribing witnesses, this 17th day of July, 1900.

WILHELM HEINRICH AUG. SIEVERTS.

JULIUS FRIEDRICH CHARLES JUERGENS. \Vitnesses:

RUDOLPH GUSTAV WITT,

ED. J UERGENS.

